Home / 30,072.78-45,110.25-9,013.05

Finding the Fourth Proportional to 30,072.78, 45,110.25 and 9,013.05

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Solution

The fourth proportional to 30,072.78, 45,110.25 and 9,013.05 is: 13,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,072.78 : 45,110.25 = 9,013.05 : x
  2. Step 2: Convert to fraction form
    30,072.78/45,110.25 = 9,013.05/x
  3. Step 3: Cross multiply
    30,072.78x = 45,110.25 × 9,013.05
  4. Step 4: Simplify right side
    30,072.78x = 406,580,938.76
  5. Step 5: Solve for x
    x = 406,580,938.76/30,072.78
  6. Step 6: Final answer
    x = 13,519.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.